X0306 4 2022-08-31 0001078271 EXTREME NETWORKS INC EXTR 0001759960 Thomas Remi 2121 RDU CENTER DR. MORRISVILLE NC 27560 1 EVP Chief Financial Officer Common Stock 2022-08-31 4 M 0 12454 0 A 142517 D Common Stock 2022-08-31 4 F 0 6175 14.33 D 136342 D Common Stock 2022-09-01 4 S 0 10000 14.0511 D 126342 D RSU Award 0 2022-08-31 4 M 0 12454 0 D 2020-08-31 2022-08-31 Common Stock 12454 0 D Represents shares withheld from the released share award for the payment of applicable income and payroll withholding taxes due on release. Transaction pursuant to the Reporting Person's 10b5-1 Plan. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.00 to $14.15 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This Time-based RSU award vests from the original grant date as to 1/3 on the one year anniversary and 1/12 each quarter thereafter. /s/ Katayoun "Katy" Motiey, Power of Attorney for Remi Thomas 2022-09-02